Slowing device for slowing scrolling speed of belt of barrier pole

ABSTRACT

A slowing device for slowing scrolling speed of belt of barrier poles includes a storage unit having a rotor to which the belt is wrapped. The rotor has an axle extending therefrom and located in the room of the storage unit. The rotor scrolls the belt backward when the belt is released. The slowing device is located in the storage unit and has two braking pieces which contact the inner wall of the room due to centrifugal force so that the belt does not move at high speed and does not injure people when being pulled or retracted.

FIELD OF THE INVENTION

The present invention relates to a slowing device, and more particularly, to a slowing device for slowing scrolling speed of the belt of barrier poles.

BACKGROUND OF THE INVENTION

The conventional belt-type barrier 9 is disclosed in FIG. 8 and comprises a pole 91 and a scrolling portion 911 is located on the top of the pole 91 so as to operate the belt 92. The scrolling portion 911 has a torsion spring (not shown) to scroll the belt 92. The belt 92 has a hook 921 so as to be hooked to the scrolling portion 911 of another pole 91. By cooperation of multiple poles 91 and the belts 92 hooked to other scrolling portions 911 of the poles 91, a barrier is formed. The poles 91 are easily carried and transported, and the belts 92 are easily set and operated so that the belt-type barrier 9 is used widely for setting movement lines in larger sites such as performing halls, dancing balls or the like.

The present invention intends to provide a slowing device for slowing the scrolling speed of the belt of the belt-type barrier poles and which is easily operated and manufactured.

SUMMARY OF THE INVENTION

The present invention relates to a slowing device for slowing scrolling speed of the belt of barrier poles and comprises a storage unit having a rotor located therein and the rotor has an axle which extends into a room in the storage unit. A belt is scrolled to the rotor and the rotor scrolls the belt backward when the belt is released. The slowing device is located in the room and has at least two braking pieces and a guide member. The at least two braking pieces are connected to two wing rods of the guide member which is secured at the center of the room.

Preferably, the braking pieces each are a crescent piece, the guide member 31 is a circular cylindrical rod and the two wing rods extend horizontally from the circular cylindrical rod. Each of the at least two braking pieces has a connection hole and the wing rods are connected to the connection holes of the at least two braking pieces.

The rotor is rotated to rotate the slowing device and the at least two braking pieces move away from the guide member by centrifugal force and contact the inner wall of the room to slow the belt.

Preferably, the room is defined by a top cap and a mediate part, wherein the top cap has a disk and a flange extends from the underside of the disk. The flange is inserted into the recessed area of the mediate part to form the room. The at least two braking pieces contact the inner wall of the flange of the room when the rotor rotates. The guide has a hexagonal rod extending from the underside thereof. The hexagonal rod extends through the central hole of the mediate part. The rotor has a hexagonal hole defined in the axle and the hexagonal rod is connected to the hexagonal hole of the axle so that the rotor can drive the slowing device. The top cap and the mediate part are fixed to the top of the storage unit by multiple bolts.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show the barrier pole of the present invention;

FIG. 2 is an enlarged view to show the top portion of the barrier pole of the present invention;

FIG. 3 is an exploded view to show the barrier pole of the present invention;

FIG. 4 is another exploded view to show the barrier pole of the present invention;

FIG. 5 is a cross sectional view of the barrier pole of the present invention;

FIG. 6 is a top view to show the rotor in the storage unit of the barrier pole of the present invention;

FIG. 7 shows that the braking pieces move outward when the rotor rotates, and

FIG. 8 shows the conventional barrier pole.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 4, the slowing device for slowing scrolling speed of the belt of barrier poles of the present invention comprises a storage unit 10, a belt 2 and a slowing device 3.

The storage unit 10 is located in a case 1 on the top of the pole 4 and has a rotor 11 located therein. The rotor 11 is cooperated with a torsion spring 16 as shown in FIG. 5 so t hat the rotor 11 can be rotated backward. The rotor 11 has an axle 111 which extends into a room 12 in the storage unit 10. The room 12 is defined by a top cap 13 and a mediate part 14, wherein the top cap 13 has a disk 131 and a flange 132 extends from the underside of the disk 131. The flange 132 is inserted into the recessed area 141 of the mediate part 14 to form the room 12. The inner wall of the flange 132 of the room 12 is provided to be in contact with two braking pieces 32 of the slowing device 3 to slow the belt 2. The top cap 13 and the mediate part 14 are fixed to the top of the storage unit 10 by multiple bolts 15. The axle 111 of the rotor 11 is inserted into the central hole 142 of the mediate part 14 so as to drive the slowing device 3 in the room 12.

The belt 2 is scrolled to the rotor 11 in the storage unit 10. The hook 20 of the belt 2 is located outside of the case 1 so that the users can easily pull the belt 2 and hook the belt 2 to another storage unit 10. The rotor 11 scrolls the belt 2 backward by the torsion spring 16 when the belt 2 is released.

The slowing device 3 and the axle 111 of the rotor 11 are both located in the room 12 and the slowing device 3 has at least two braking pieces 32 and a guide member 31. The at least two braking pieces 32 are connected to two wing rods 311 of the guide member 31. The at least two braking pieces 32 each are a crescent piece. The top of the guide member 31 is pivotably connected to a first central hole 133 of the top cap 13. The guide member 31 is a circular cylindrical rod and the two wing rods 311 extend horizontally from the circular cylindrical rod of the guide member 31 in opposite directions. Each of the at least two braking pieces 32 has a connection hole 321 which is located corresponding to the wing rod 311 corresponding thereto. The wing rods 311 are connected to the connection holes 321 of the at least two braking pieces 32. Because the hexagonal rod 312 extends through the second central hole 142 of the mediate part 14, the rotor 11 has a hexagonal hole 112 defined in the axle 111, and the hexagonal rod 312 is connected to the hexagonal hole 112 of the axle 111. The axle 111 can drive the slowing device 3.

As shown in FIGS. 4 and 5, the at least two braking pieces 32 and the guide member 31 are installed in the storage unit 10 and the at least two braking pieces 32 are slidably connected to the two wing rods 311. In the preferable embodiment, the maximum diameter “d” of the slowing device 3 is 45 mm and the maximum inner diameter “D” of the flange 132 is 47 mm. A gap “a” between the slowing device 3 and the flange 132 is 1.5 mm. The maximum depth “H” of the recessed area 141 of the mediate cap 14 is 10 mm. The thickness “h” of each of the at least two braking pieces 32 is 7 mm. The weight of each of the at least two braking pieces 32 is 40 grams.

As shown in FIG. 6, the rotor 11 and the belt 2 are in normal status, the at least two braking pieces 32 are not in contact with the flange 132. Alternatively, the at least two braking pieces 32 are in contact with the flange 132 by do not apply normal force to the flange 132.

As shown in FIG. 7, when the users pull the belt 2, the rotor 11 and the slowing device 3 are rotated, the at least two braking pieces 32 move away from the guide member 31 by centrifugal force and contact the inner wall of the flange 132. Friction is generated between the flange 132 and the at least two braking pieces 32, so that the movement of the belt 3 is slowed. Similarly, when the belt 2 is released, the belt 2 is scrolled to the rotor 11, the at least two braking pieces 32 move away from the guide member 31 by centrifugal force and contact the inner wall of the flange 132. Friction is generated between the flange 132 and the at least two braking pieces 32, so that the movement of the belt 3 is also slowed. The speed that the belt 3 is operated is slowed so that the belt 3 does not injure people.

The flange 132 of the top cap 13 is inserted to the recessed area 141 of the mediate part 14, and the hexagonal rod 312 of the guide member 31 extends through the second central hole 142 of the mediate part 14 and is connected to the hexagonal hole 112 of the axle 111, so that axle 111 of the rotor 11 can rotate the slowing device 3. The top cap 13 and the mediate part 14 are connected to the top of the storage unit 10 so that the assembly is easy.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

What is claimed is:
 1. A slowing device for slowing scrolling speed of belt of barrier poles, comprising: a storage unit having a rotor located therein, the rotor having an axle which extends into a room in the storage unit; a belt scrolled to the rotor and the rotor scrolling the belt backward when the belt is released; a slowing device located in the room and having at least two braking pieces and a guide member, the at least two braking pieces connected to two wing rods of the guide member, the guide member being secured at a center of the room, and the rotor being rotated to rotate the slowing device, the at least two braking pieces moving away from the guide member by centrifugal force and contacting an inner wall of the room to slow the belt.
 2. The device as claimed in claim 1, wherein the at least two braking pieces each are a crescent piece, the guide member is a circular cylindrical rod and the two wing rods extend horizontally from the circular cylindrical rod of the guide member in opposite directions, each of the at least two braking pieces has a connection hole which is located corresponding to the wing rod corresponding thereto, the wing rods are connected to the connection holes of the at least two braking pieces.
 3. The device as claimed in claim 1, wherein the room is defined by a top cap and a mediate part, the top cap has a disk and a flange extends from an underside of the disk, the flange is inserted into the recessed area of the mediate part to form the room, the at least two braking pieces contact the inner wall of the flange of the room when the rotor rotates.
 4. The device as claimed in claim 3, wherein the top cap and the mediate part are fixed to a top of the storage unit by multiple bolts.
 5. The device as claimed in claim 3, wherein a top of the guide member is pivotably connected to a first central hole of the top cap, the guide has a hexagonal rod extending from an underside thereof, the hexagonal rod extends through the second central hole of the mediate part, the rotor has a hexagonal hole defined in the axle and the hexagonal rod is connected to the hexagonal hole of the axle.
 6. The device as claimed in claim 3, wherein a maximum diameter of the slowing device is 45 mm, a maximum inner diameter of the flange is 47 mm, a gap between the slowing device and the flange is 1.5 mm.
 7. The device as claimed in claim 3, wherein a maximum depth of the recessed area of the mediate cap is 10 mm, a thickness of each of the at least two braking pieces is 7 mm, a weight of each of the at least two braking pieces is 40 grams. 